This 72*15 inch aluminum ramp is made of high-strength and lightweight aluminum alloy, our load ramps are highly resistant to rust and deformation for long-term outdoor use.material:Premium aluminum, color:Silver, overall width:72 inches, overall height:15 inches, thickness:2.5"/62.5 mm, bearing force:About 6000lbs(3000lbs/per pc), load height:Up to 12~36 in/305~914 mm, weight:49.8 lbs, warranty:1 Year